ASTROSAT CZTI

Data Quality Report

Orbit 31810

Creation date: 2024-06-27T20:33:00.678502
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_037T01_9000004644_31810cztM0_level2.evt modeM0/AS1T04_037T01_9000004644_31810cztM0_level2_quad_clean.evt
Size (bytes)1,709,478,720205,283,520
Size1.6 GB 195.8 MB
Events in quadrant A13,880,2421,259,113
Events in quadrant B14,838,3601,303,433
Events in quadrant C9,437,6581,274,002
Events in quadrant D12,481,0181,216,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521903
B0563483
C0384223
D0480583

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16868201711.957553%
B168689375.554897%
C168687334.345506%
D168687964.718995%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 18203 16871 1353 1353 7.43% 8.02%
B 18203 16871 471 471 2.59% 2.79%
C 18203 16870 56 56 0.31% 0.33%
D 18203 16871 647 647 3.55% 3.83%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 6298549 15978.57 1960 1921 394.1
A 13 254 29990 71.23 1960 1921 394.1
A 13 6 21168 48.84 1960 1921 394.1
B 6 159 4567082 11768.18 2005 1954 387.9
B 10 245 1252619 3224.02 2005 1954 387.9
B 4 80 702869 1806.85 2005 1954 387.9
C 0 10 1012729 2207.86 1944 1959 457.8
C 14 238 471978 1026.68 1944 1959 457.8
C 14 254 221286 479.08 1944 1959 457.8
D 8 195 2657240 5645.12 1949 1897 470.4
D 12 218 1826412 3878.82 1949 1897 470.4
D 12 233 228555 481.86 1949 1897 470.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter